Heat exchanger



April 3, 1951 c. s. SIMPELAAR HEAT EXCHANGER Filed April 24, 1946Patented Apr. 3, 1951 UNI/TED STATE HEAT EXCHANGER Clyde S.Simpelaar,'Racne, Wis., assignor to `Modine liiainufacturing Company,Racine, Wis.,

a corporation of Wisconsin A l application-Aprila194e,seria1.No.`664,'544 u I 1Claim. `(Cl.257 '-24 5) in 'I'his invention'relates to'heatmexchangers of n the type which'employs gas,v air as anexample, for cooling a non-viscous fluid, such as water.

One of the objects of this invention is to provide a highly eicient heatexchanger of which the parts may be readily assembled and bondedtogether.

Another object is to provide a core for the heat exchanger composed ofspaced rows of nested and bonded together channel shaped nn elements inwhich the rows are spaced 'apart by marginal spacing members, bonded tocontiguous n members and disposed at the sides of the core, whereby toprovide fluid passages between the rows of n members.

Another object is to provide partition members between the iin elementsfor causing the liquid to take a tortuous path through the passages inthe core.

Other objects and advantages will appear in the course of thisspecication and with said objects and advantages in view this invention-consists in the several novel featuresof construction, arrangement andcombination of parts hereinafter fully set forth and more particularlydened in the appended claim.

The invention is clearly illustrated in the drawing accompanying thisspecication, in which:

Fig. 1 is an end elevation of a heat exchanger with the upper partpartly broken out, with the lower portion being a sectional view takenapproximately on the line I-I of Fig. 2, and embodying a simple form ofthe present invention;

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. l;

Fig. 3 is a view partly in side elevation and partly in vertical,longitudinal section of the heat exchanger partly broken away; and

Fig. 4 is an enlarged vertical fragmental cross section taken on theline -4-4 of Fig. 2.

Referring to said drawing which is merely illustrative of one embodimentof the invention, the reference character 5 designates the core'of theheat exchanger, designates an inlet header and 'I an outletheader. Aninlet pipe 8 opens to the inlet header and an outlet pipe 9 opens :fromthe outlet header 1.

The core 5 is composed of a plurality of spaced rows of nested andbonded together channel shaped n elements I0. Between the rows of finelements "IG are spacing members Il disposed at the outer .faces of thecore. The iin elements I0 and spacingr members II surround and enclosepassageways'lz through which the liquid ows from theinlet header to theoutlet header. The

I spacing member-siii are bonded to the contiguous n elements; n., The nelements are each composed of across wall I3 (see Fig. 4) from whichextend sidewalls I4 which terminate in oiset edge portions I 5 andprovide seats I5a for the next adjacent iin element to seat against.

The channels of all of the fin elements, except one endmost one, face inthe same direction and are nested together as shown in Fig. 4. Theendmost fin element I6 is of channel formation with its channel facingin the opposite direction. The n element I6 is nestedinto the spacebetween the offset edge portions of the next adjacent fin element, asclearly seen in Fig. 4.

Extending through the spaces between the adjacent n elements aretransversely extending spacing members II, one extending from onespacing member I I partway across the space and the other spacing memberII extending from the opposite spacing member II partway across thespace. These spacing members I1 divide the passages I2 into tortuouspassageways whereby the liquid will remain longer in the core than if itwere to flow in a straight path from the inlet to the outlet of the heatexchanger.

If desired, the inlet and outlet headers may be formed as parts lofmetal side walls I8 that extend from top to bottom of the core and maybe formed with flanges I9 overlying the outermost fin elements.

L The reference character 2e designates bonding material by means ofwhich the several parts of the heat exchanger are bonded together. Inconstructing the heat exchanger embodying the present invention the nnelements are nested together in rows, the spacing members placed betweenthe spaced rows of fin elements and the walls I8 placed upon the sidesof the core. The entire structure is then placed in a suitable` furnaceand heated to the fusing temperature.

In operation, the liquid to be cooled flows through the tortuouspassageways I2 from the inlet header to the outlet header, and ail`flows through the passageways formed by the channel shaped fin elements.The heat in the liquid is conducted from the liquid by the n elements tothe passageways therebetween and is carried away by the air flowingthrough said passageways.

Having thus described my invention, it is obvious that variousimmaterial modifications may be made in the same without departing fromthe hence, I do not wish to form, construction, arrangement andcombination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

In a heat exchanger, a plurality of spaced finned fluid passes, eachcomprising a series of channel-shaped n elefnents having substantiallyparallel sidewalls, formed with oiset edge por'- tions, connected to anintermediate wall, said n elements being interlocked with the offsetedge' portions of each element overlapping the side walls of the nextadjacent element and bonded thereto to form an integral fluid pass, theheat transfer walls of `which are Composed of the respective side wallsof the individual elements, each of said heat transfer Wallsflyingsubstantially in a single plane extending substantially parallel to theplane of the other heat transfer wall, with said Walls being connectedby a plu- 20 aiity of' longimdinauyY extending fins,.margina1 spacingmembers between and bonded to adjacent fluid passes at the sides of-thevcore tofform pasthe structure.

CLYDE S. SIMPELAAR.

REFERENCES CITED `The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Na'ne Date 1,759,656 Mantle May 20, 1930'2,064,928` Lewis Dec. 22, 1936 2,339,284 .Modine Jan. 18, 1944 FOREIGNPATENTS Number Country Date 438,358 France Mar. 15, 1912 478.294

Germany Apr. 28, 1925

